1009990999002 has 8 divisors (see below), whose sum is σ = 2019981998016. Its totient is φ = 336663666332.

The previous prime is 1009990998953. The next prime is 1009990999007. The reversal of 1009990999002 is 2009990999001.

It is a sphenic number, since it is the product of 3 distinct primes.

1009990999002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1009990999007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84165916578 + ... + 84165916589.

It is an arithmetic number, because the mean of its divisors is an integer number (252497749752).

Almost surely, 2^{1009990999002} is an apocalyptic number.

1009990999002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1009990999002 is a wasteful number, since it uses less digits than its factorization.

1009990999002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168331833172.

The product of its (nonzero) digits is 1062882, while the sum is 57.

Subtracting 1009990999002 from its reverse (2009990999001), we obtain a palindrome (999999999999).

The spelling of 1009990999002 in words is "one trillion, nine billion, nine hundred ninety million, nine hundred ninety-nine thousand, two".